/*
 * @LastEditors: 七七
 * @Date: 2023-01-08 11:24:20
 */
import React, { Component } from 'react'
import store from '../../redux/store'
import { creteIncrementAction, creteDecrementAction, creteIncrementAsyncAction } from '../../redux/count_action'

export default class Count extends Component {

  // state = { count: 0 }

  // componentDidMount() {
  //   // 检测redux中状态的变化，只要变化，就调用render
  //   store.subscribe(() => {
  //     this.setState({})
  //   })
  // }

  increment = () => {
    const { value } = this.selectNumber
    store.dispatch(creteIncrementAction(value * 1))
  }

  decrement = () => {
    const { value } = this.selectNumber
    store.dispatch(creteDecrementAction(value * 1))
  }

  incrementIfOdd = () => {
    const { value } = this.selectNumber
    const count = store.getState();
    if (count % 2 !== 0) {
      store.dispatch(creteIncrementAction(value * 1))
    }
  }

  incrementAsync = () => {
    const { value } = this.selectNumber
    // setTimeout(() => {
    store.dispatch(creteIncrementAsyncAction(value * 1, 500));
    // }, 500);
  }

  render() {
    // console.log('count', store);
    return (
      <div>
        <h1>当前求和为：{store.getState()}</h1>
        <select ref={c => this.selectNumber = c} name="" id="">
          <option value="1">1</option>
          <option value="2">2</option>
          <option value="3">3</option>
        </select>&nbsp;
        <button onClick={this.increment}>+</button>&nbsp;
        <button onClick={this.decrement}>-</button>&nbsp;
        <button onClick={this.incrementIfOdd}>当前求和为奇数再加</button>&nbsp;
        <button onClick={this.incrementAsync}>异步加</button>
      </div>
    )
  }
}
